Libav
h264.h
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1 /*
2  * H.26L/H.264/AVC/JVT/14496-10/... encoder/decoder
3  * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
4  *
5  * This file is part of Libav.
6  *
7  * Libav is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * Libav is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with Libav; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
28 #ifndef AVCODEC_H264_H
29 #define AVCODEC_H264_H
30 
31 #include "libavutil/intreadwrite.h"
32 #include "cabac.h"
33 #include "error_resilience.h"
34 #include "get_bits.h"
35 #include "h264chroma.h"
36 #include "h264dsp.h"
37 #include "h264pred.h"
38 #include "h264qpel.h"
39 #include "me_cmp.h"
40 #include "mpegutils.h"
41 #include "parser.h"
42 #include "qpeldsp.h"
43 #include "rectangle.h"
44 #include "videodsp.h"
45 
46 #define H264_MAX_PICTURE_COUNT 32
47 #define H264_MAX_THREADS 16
48 
49 #define MAX_SPS_COUNT 32
50 #define MAX_PPS_COUNT 256
51 
52 #define MAX_MMCO_COUNT 66
53 
54 #define MAX_DELAYED_PIC_COUNT 16
55 
56 /* Compiling in interlaced support reduces the speed
57  * of progressive decoding by about 2%. */
58 #define ALLOW_INTERLACE
59 
60 #define FMO 0
61 
66 #define MAX_SLICES 16
67 
68 #ifdef ALLOW_INTERLACE
69 #define MB_MBAFF(h) h->mb_mbaff
70 #define MB_FIELD(h) h->mb_field_decoding_flag
71 #define FRAME_MBAFF(h) h->mb_aff_frame
72 #define FIELD_PICTURE(h) (h->picture_structure != PICT_FRAME)
73 #define LEFT_MBS 2
74 #define LTOP 0
75 #define LBOT 1
76 #define LEFT(i) (i)
77 #else
78 #define MB_MBAFF(h) 0
79 #define MB_FIELD(h) 0
80 #define FRAME_MBAFF(h) 0
81 #define FIELD_PICTURE(h) 0
82 #undef IS_INTERLACED
83 #define IS_INTERLACED(mb_type) 0
84 #define LEFT_MBS 1
85 #define LTOP 0
86 #define LBOT 0
87 #define LEFT(i) 0
88 #endif
89 #define FIELD_OR_MBAFF_PICTURE(h) (FRAME_MBAFF(h) || FIELD_PICTURE(h))
90 
91 #ifndef CABAC
92 #define CABAC(h) h->pps.cabac
93 #endif
94 
95 #define CHROMA422(h) (h->sps.chroma_format_idc == 2)
96 #define CHROMA444(h) (h->sps.chroma_format_idc == 3)
97 
98 #define EXTENDED_SAR 255
99 
100 #define MB_TYPE_REF0 MB_TYPE_ACPRED // dirty but it fits in 16 bit
101 #define MB_TYPE_8x8DCT 0x01000000
102 #define IS_REF0(a) ((a) & MB_TYPE_REF0)
103 #define IS_8x8DCT(a) ((a) & MB_TYPE_8x8DCT)
104 
105 #define QP_MAX_NUM (51 + 2 * 6) // The maximum supported qp
106 
107 /* NAL unit types */
108 enum {
110  NAL_DPA = 2,
111  NAL_DPB = 3,
112  NAL_DPC = 4,
114  NAL_SEI = 6,
115  NAL_SPS = 7,
116  NAL_PPS = 8,
117  NAL_AUD = 9,
123  NAL_FF_IGNORE = 0xff0f001,
124 };
125 
129 typedef enum {
136 } SEI_Type;
137 
141 typedef enum {
152 
156 typedef struct SPS {
157  unsigned int sps_id;
163  int poc_type;
171  int mb_width;
172  int mb_height;
174  int mb_aff;
176  int crop;
177 
178  /* those 4 are already in luma samples */
179  unsigned int crop_left;
180  unsigned int crop_right;
181  unsigned int crop_top;
182  unsigned int crop_bottom;
193  uint32_t time_scale;
195  short offset_for_ref_frame[256]; // FIXME dyn aloc?
205  int cpb_cnt;
213  int new;
214 } SPS;
215 
219 typedef struct PPS {
220  unsigned int sps_id;
221  int cabac;
225  unsigned int ref_count[2];
228  int init_qp;
229  int init_qs;
239 } PPS;
240 
244 typedef enum MMCOOpcode {
245  MMCO_END = 0,
252 } MMCOOpcode;
253 
257 typedef struct MMCO {
260  int long_arg;
261 } MMCO;
262 
263 typedef struct H264Picture {
264  struct AVFrame f;
266 
268  int8_t *qscale_table;
269 
271  int16_t (*motion_val[2])[2];
272 
274  uint32_t *mb_type;
275 
278 
280  int8_t *ref_index[2];
281 
282  int field_poc[2];
283  int poc;
284  int frame_num;
287  int pic_id;
289  int long_ref;
290  int ref_poc[2][2][32];
291  int ref_count[2][2];
292  int mbaff;
294 
297  int recovered;
298 } H264Picture;
299 
303 typedef struct H264Context {
313 
317 
319  int chroma_qp[2]; // QPc
320 
321  int qp_thresh;
322 
323  /* coded dimensions -- 16 * mb w/h */
324  int width, height;
325  ptrdiff_t linesize, uvlinesize;
327 
328  int qscale;
333 
335  int flags;
337 
340 
341  // prediction stuff
344 
349 
351  int top_type;
354 
357 
362  unsigned int top_samples_available;
365  uint8_t (*top_borders[2])[(16 * 3) * 2];
366 
372 
374 
378  DECLARE_ALIGNED(16, int16_t, mv_cache)[2][5 * 8][2];
379  DECLARE_ALIGNED(8, int8_t, ref_cache)[2][5 * 8];
380 #define LIST_NOT_USED -1 // FIXME rename?
381 #define PART_NOT_AVAILABLE -2
382 
387 
392  int block_offset[2 * (16 * 3)];
393 
394  uint32_t *mb2b_xy; // FIXME are these 4 a good idea?
395  uint32_t *mb2br_xy;
396  int b_stride; // FIXME use s->b4_stride
397 
398  ptrdiff_t mb_linesize;
399  ptrdiff_t mb_uvlinesize;
400 
403 
404  uint32_t dequant4_buffer[6][QP_MAX_NUM + 1][16]; // FIXME should these be moved down?
405  uint32_t dequant8_buffer[6][QP_MAX_NUM + 1][64];
406  uint32_t(*dequant4_coeff[6])[16];
407  uint32_t(*dequant8_coeff[6])[64];
408 
410  uint16_t *slice_table;
414 
415  // interlacing specific flags
418  int mb_mbaff;
421 
422  DECLARE_ALIGNED(8, uint16_t, sub_mb_type)[4];
423 
424  // Weighted pred stuff
429  // The following 2 can be changed to int8_t but that causes 10cpu cycles speedloss
430  int luma_weight[48][2][2];
431  int chroma_weight[48][2][2][2];
432  int implicit_weight[48][48][2];
433 
439  int map_col_to_list0[2][16 + 32];
440  int map_col_to_list0_field[2][2][16 + 32];
441 
445  unsigned int ref_count[2];
446  unsigned int list_count;
451  int ref2frm[MAX_SLICES][2][64];
452 
453  // data partitioning
458 
460  DECLARE_ALIGNED(16, int16_t, mb)[16 * 48 * 2];
461  DECLARE_ALIGNED(16, int16_t, mb_luma_dc)[3][16 * 2];
462  int16_t mb_padding[256 * 2];
463 
469 
470  /* 0x100 -> non null luma_dc, 0x80/0x40 -> non null chroma_dc (cb/cr), 0x?0 -> chroma_cbp(0, 1, 2), 0x0? luma_cbp */
471  uint16_t *cbp_table;
472  int cbp;
473  int top_cbp;
474  int left_cbp;
475  /* chroma_pred_mode for i4x4 or i16x16, else 0 */
478  uint8_t (*mvd_table[2])[2];
479  DECLARE_ALIGNED(16, uint8_t, mvd_cache)[2][5 * 8][2];
482 
495 
497 
498  int mb_x, mb_y;
504  int mb_num;
505  int mb_xy;
506 
508 
509  // deblock
513 
514  // =============================================================
515  // Things below are not used in the MB or more inner code
516 
520  unsigned int rbsp_buffer_size[2];
521 
525  int is_avc;
527  int got_first;
528 
531 
534 
536 
537  uint16_t *slice_table_base;
538 
539  // POC stuff
540  int poc_lsb;
541  int poc_msb;
543  int delta_poc[2];
550 
555 
560 
562 
571 
578 
581 
583 
589 
594 
602 
604 
610 
612 
620 
628 
636 
643 
650 
655 
660 
669 
677 
682 #define FRAME_RECOVERED_IDR (1 << 0)
683 
687 #define FRAME_RECOVERED_SEI (1 << 1)
688 
690 
693 
694  // Timestamp stuff
697 
701  int16_t *dc_val_base;
702 
707 
708  /* Motion Estimation */
711 } H264Context;
712 
713 extern const uint8_t ff_h264_chroma_qp[3][QP_MAX_NUM + 1];
714 extern const uint16_t ff_h264_mb_sizes[4];
715 
720 
725 
730 
734 int ff_h264_decode_picture_parameter_set(H264Context *h, int bit_length);
735 
744 const uint8_t *ff_h264_decode_nal(H264Context *h, const uint8_t *src,
745  int *dst_length, int *consumed, int length);
746 
752 
756 int ff_h264_get_slice_type(const H264Context *h);
757 
763 
768 
772 
776 int ff_h264_execute_ref_pic_marking(H264Context *h, MMCO *mmco, int mmco_count);
777 
779  int first_slice);
780 
781 int ff_generate_sliding_window_mmcos(H264Context *h, int first_slice);
782 
788 
793 int ff_h264_check_intra_pred_mode(H264Context *h, int mode, int is_chroma);
794 
798 void ff_h264_decode_init_vlc(void);
799 
805 
811 
813 
815 
818 void ff_h264_pred_direct_motion(H264Context *const h, int *mb_type);
819 
820 void ff_h264_filter_mb_fast(H264Context *h, int mb_x, int mb_y,
821  uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr,
822  unsigned int linesize, unsigned int uvlinesize);
823 void ff_h264_filter_mb(H264Context *h, int mb_x, int mb_y,
824  uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr,
825  unsigned int linesize, unsigned int uvlinesize);
826 
833 
834 /*
835  * o-o o-o
836  * / / /
837  * o-o o-o
838  * ,---'
839  * o-o o-o
840  * / / /
841  * o-o o-o
842  */
843 
844 /* Scan8 organization:
845  * 0 1 2 3 4 5 6 7
846  * 0 DY y y y y y
847  * 1 y Y Y Y Y
848  * 2 y Y Y Y Y
849  * 3 y Y Y Y Y
850  * 4 y Y Y Y Y
851  * 5 DU u u u u u
852  * 6 u U U U U
853  * 7 u U U U U
854  * 8 u U U U U
855  * 9 u U U U U
856  * 10 DV v v v v v
857  * 11 v V V V V
858  * 12 v V V V V
859  * 13 v V V V V
860  * 14 v V V V V
861  * DY/DU/DV are for luma/chroma DC.
862  */
863 
864 #define LUMA_DC_BLOCK_INDEX 48
865 #define CHROMA_DC_BLOCK_INDEX 49
866 
867 // This table must be here because scan8[constant] must be known at compiletime
868 static const uint8_t scan8[16 * 3 + 3] = {
869  4 + 1 * 8, 5 + 1 * 8, 4 + 2 * 8, 5 + 2 * 8,
870  6 + 1 * 8, 7 + 1 * 8, 6 + 2 * 8, 7 + 2 * 8,
871  4 + 3 * 8, 5 + 3 * 8, 4 + 4 * 8, 5 + 4 * 8,
872  6 + 3 * 8, 7 + 3 * 8, 6 + 4 * 8, 7 + 4 * 8,
873  4 + 6 * 8, 5 + 6 * 8, 4 + 7 * 8, 5 + 7 * 8,
874  6 + 6 * 8, 7 + 6 * 8, 6 + 7 * 8, 7 + 7 * 8,
875  4 + 8 * 8, 5 + 8 * 8, 4 + 9 * 8, 5 + 9 * 8,
876  6 + 8 * 8, 7 + 8 * 8, 6 + 9 * 8, 7 + 9 * 8,
877  4 + 11 * 8, 5 + 11 * 8, 4 + 12 * 8, 5 + 12 * 8,
878  6 + 11 * 8, 7 + 11 * 8, 6 + 12 * 8, 7 + 12 * 8,
879  4 + 13 * 8, 5 + 13 * 8, 4 + 14 * 8, 5 + 14 * 8,
880  6 + 13 * 8, 7 + 13 * 8, 6 + 14 * 8, 7 + 14 * 8,
881  0 + 0 * 8, 0 + 5 * 8, 0 + 10 * 8
882 };
883 
884 static av_always_inline uint32_t pack16to32(int a, int b)
885 {
886 #if HAVE_BIGENDIAN
887  return (b & 0xFFFF) + (a << 16);
888 #else
889  return (a & 0xFFFF) + (b << 16);
890 #endif
891 }
892 
893 static av_always_inline uint16_t pack8to16(int a, int b)
894 {
895 #if HAVE_BIGENDIAN
896  return (b & 0xFF) + (a << 8);
897 #else
898  return (a & 0xFF) + (b << 8);
899 #endif
900 }
901 
906 {
907  return h->pps.chroma_qp_table[t][qscale];
908 }
909 
914 {
915  const int index8 = scan8[n];
916  const int left = h->intra4x4_pred_mode_cache[index8 - 1];
917  const int top = h->intra4x4_pred_mode_cache[index8 - 8];
918  const int min = FFMIN(left, top);
919 
920  tprintf(h->avctx, "mode:%d %d min:%d\n", left, top, min);
921 
922  if (min < 0)
923  return DC_PRED;
924  else
925  return min;
926 }
927 
929 {
930  int8_t *i4x4 = h->intra4x4_pred_mode + h->mb2br_xy[h->mb_xy];
931  int8_t *i4x4_cache = h->intra4x4_pred_mode_cache;
932 
933  AV_COPY32(i4x4, i4x4_cache + 4 + 8 * 4);
934  i4x4[4] = i4x4_cache[7 + 8 * 3];
935  i4x4[5] = i4x4_cache[7 + 8 * 2];
936  i4x4[6] = i4x4_cache[7 + 8 * 1];
937 }
938 
940 {
941  const int mb_xy = h->mb_xy;
942  uint8_t *nnz = h->non_zero_count[mb_xy];
943  uint8_t *nnz_cache = h->non_zero_count_cache;
944 
945  AV_COPY32(&nnz[ 0], &nnz_cache[4 + 8 * 1]);
946  AV_COPY32(&nnz[ 4], &nnz_cache[4 + 8 * 2]);
947  AV_COPY32(&nnz[ 8], &nnz_cache[4 + 8 * 3]);
948  AV_COPY32(&nnz[12], &nnz_cache[4 + 8 * 4]);
949  AV_COPY32(&nnz[16], &nnz_cache[4 + 8 * 6]);
950  AV_COPY32(&nnz[20], &nnz_cache[4 + 8 * 7]);
951  AV_COPY32(&nnz[32], &nnz_cache[4 + 8 * 11]);
952  AV_COPY32(&nnz[36], &nnz_cache[4 + 8 * 12]);
953 
954  if (!h->chroma_y_shift) {
955  AV_COPY32(&nnz[24], &nnz_cache[4 + 8 * 8]);
956  AV_COPY32(&nnz[28], &nnz_cache[4 + 8 * 9]);
957  AV_COPY32(&nnz[40], &nnz_cache[4 + 8 * 13]);
958  AV_COPY32(&nnz[44], &nnz_cache[4 + 8 * 14]);
959  }
960 }
961 
963  int b_stride,
964  int b_xy, int b8_xy,
965  int mb_type, int list)
966 {
967  int16_t(*mv_dst)[2] = &h->cur_pic.motion_val[list][b_xy];
968  int16_t(*mv_src)[2] = &h->mv_cache[list][scan8[0]];
969  AV_COPY128(mv_dst + 0 * b_stride, mv_src + 8 * 0);
970  AV_COPY128(mv_dst + 1 * b_stride, mv_src + 8 * 1);
971  AV_COPY128(mv_dst + 2 * b_stride, mv_src + 8 * 2);
972  AV_COPY128(mv_dst + 3 * b_stride, mv_src + 8 * 3);
973  if (CABAC(h)) {
974  uint8_t (*mvd_dst)[2] = &h->mvd_table[list][FMO ? 8 * h->mb_xy
975  : h->mb2br_xy[h->mb_xy]];
976  uint8_t(*mvd_src)[2] = &h->mvd_cache[list][scan8[0]];
977  if (IS_SKIP(mb_type)) {
978  AV_ZERO128(mvd_dst);
979  } else {
980  AV_COPY64(mvd_dst, mvd_src + 8 * 3);
981  AV_COPY16(mvd_dst + 3 + 3, mvd_src + 3 + 8 * 0);
982  AV_COPY16(mvd_dst + 3 + 2, mvd_src + 3 + 8 * 1);
983  AV_COPY16(mvd_dst + 3 + 1, mvd_src + 3 + 8 * 2);
984  }
985  }
986 
987  {
988  int8_t *ref_index = &h->cur_pic.ref_index[list][b8_xy];
989  int8_t *ref_cache = h->ref_cache[list];
990  ref_index[0 + 0 * 2] = ref_cache[scan8[0]];
991  ref_index[1 + 0 * 2] = ref_cache[scan8[4]];
992  ref_index[0 + 1 * 2] = ref_cache[scan8[8]];
993  ref_index[1 + 1 * 2] = ref_cache[scan8[12]];
994  }
995 }
996 
997 static av_always_inline void write_back_motion(H264Context *h, int mb_type)
998 {
999  const int b_stride = h->b_stride;
1000  const int b_xy = 4 * h->mb_x + 4 * h->mb_y * h->b_stride; // try mb2b(8)_xy
1001  const int b8_xy = 4 * h->mb_xy;
1002 
1003  if (USES_LIST(mb_type, 0)) {
1004  write_back_motion_list(h, b_stride, b_xy, b8_xy, mb_type, 0);
1005  } else {
1006  fill_rectangle(&h->cur_pic.ref_index[0][b8_xy],
1007  2, 2, 2, (uint8_t)LIST_NOT_USED, 1);
1008  }
1009  if (USES_LIST(mb_type, 1))
1010  write_back_motion_list(h, b_stride, b_xy, b8_xy, mb_type, 1);
1011 
1012  if (h->slice_type_nos == AV_PICTURE_TYPE_B && CABAC(h)) {
1013  if (IS_8X8(mb_type)) {
1014  uint8_t *direct_table = &h->direct_table[4 * h->mb_xy];
1015  direct_table[1] = h->sub_mb_type[1] >> 1;
1016  direct_table[2] = h->sub_mb_type[2] >> 1;
1017  direct_table[3] = h->sub_mb_type[3] >> 1;
1018  }
1019  }
1020 }
1021 
1023 {
1025  return !(AV_RN64A(h->sub_mb_type) &
1027  0x0001000100010001ULL));
1028  else
1029  return !(AV_RN64A(h->sub_mb_type) &
1031  0x0001000100010001ULL));
1032 }
1033 
1034 int ff_h264_field_end(H264Context *h, int in_setup);
1035 
1038 
1041 
1042 void ff_h264_draw_horiz_band(H264Context *h, int y, int height);
1043 int ff_init_poc(H264Context *h, int pic_field_poc[2], int *pic_poc);
1046 
1048 int ff_h264_execute_decode_slices(H264Context *h, unsigned context_count);
1050  const AVCodecContext *src);
1051 
1053 
1054 void ff_h264_free_tables(H264Context *h, int free_rbsp);
1055 
1056 #endif /* AVCODEC_H264_H */
int ff_init_poc(H264Context *h, int pic_field_poc[2], int *pic_poc)
Definition: h264.c:1103
int chroma_format_idc
Definition: h264.h:160
static av_always_inline uint16_t pack8to16(int a, int b)
Definition: h264.h:893
void ff_h264_direct_dist_scale_factor(H264Context *const h)
Definition: h264_direct.c:50
GetBitContext inter_gb
Definition: h264.h:455
int video_signal_type_present_flag
Definition: h264.h:185
static av_always_inline int get_dct8x8_allowed(H264Context *h)
Definition: h264.h:1022
int last_slice_type
Definition: h264.h:613
int ff_h264_decode_mb_cabac(H264Context *h)
Decode a CABAC coded macroblock.
Definition: h264_cabac.c:1882
void ff_h264_unref_picture(H264Context *h, H264Picture *pic)
Definition: h264_picture.c:46
Memory management control operation.
Definition: h264.h:257
int ff_h264_decode_seq_parameter_set(H264Context *h)
Decode SPS.
Definition: h264_ps.c:299
uint8_t * edge_emu_buffer
Definition: h264.h:700
int workaround_bugs
Definition: h264.h:336
int long_ref
1->long term reference 0->short term reference
Definition: h264.h:289
unsigned int top_samples_available
Definition: h264.h:362
unsigned int topleft_samples_available
Definition: h264.h:361
int single_decode_warning
1 if the single thread fallback warning has already been displayed, 0 otherwise.
Definition: h264.h:609
GetBitContext gb
Definition: h264.h:311
int ff_h264_execute_decode_slices(H264Context *h, unsigned context_count)
Call decode_slice() for each context.
Definition: h264_slice.c:2351
5: top field, bottom field, top field repeated, in that order
Definition: h264.h:147
int sei_cpb_removal_delay
cpb_removal_delay in picture timing SEI message, see H.264 C.1.2
Definition: h264.h:659
int low_delay
Definition: h264.h:332
int mb_num
Definition: h264.h:504
GetBitContext * intra_gb_ptr
Definition: h264.h:456
This structure describes decoded (raw) audio or video data.
Definition: frame.h:135
Definition: h264.h:111
int mb_aff_frame
Definition: h264.h:416
int topleft_type
Definition: h264.h:350
int delta_poc[2]
Definition: h264.h:543
ptrdiff_t uvlinesize
Definition: h264.h:325
int last_qscale_diff
Definition: h264.h:477
#define LEFT_MBS
Definition: h264.h:73
int quincunx_subsampling
Definition: h264.h:635
int cbp
Definition: h264.h:472
3: top field, bottom field, in that order
Definition: h264.h:145
int first_field
Definition: h264.h:420
int ff_h264_check_intra4x4_pred_mode(H264Context *h)
Check if the top & left blocks are available if needed & change the dc mode so it only uses the avail...
Definition: h264.c:128
unregistered user data
Definition: h264.h:132
int weighted_bipred_idc
Definition: h264.h:227
int ff_h264_get_slice_type(const H264Context *h)
Reconstruct bitstream slice_type.
Definition: h264_slice.c:1816
int chroma_qp_index_offset[2]
Definition: h264.h:230
int left_type[LEFT_MBS]
Definition: h264.h:353
H264ChromaContext h264chroma
Definition: h264.h:308
Definition: h264.h:115
uint8_t cabac_state[1024]
Definition: h264.h:468
uint16_t * cbp_table
Definition: h264.h:471
int scaling_matrix_present
Definition: h264.h:198
int luma_weight_flag[2]
7.4.3.2 luma_weight_lX_flag
Definition: h264.h:691
MMCO mmco[MAX_MMCO_COUNT]
memory management control operations buffer.
Definition: h264.h:575
uint8_t scaling_matrix4[6][16]
Definition: h264.h:199
int topleft_partition
Definition: h264.h:356
7: frame doubling
Definition: h264.h:149
#define MAX_PPS_COUNT
Definition: h264.h:50
Sequence parameter set.
Definition: h264.h:156
int initial_cpb_removal_delay[32]
Initial timestamps for CPBs.
Definition: h264.h:696
int mb_y
Definition: h264.h:498
int coded_picture_number
Definition: h264.h:331
int bitstream_restriction_flag
Definition: h264.h:196
unsigned int ref_count[2]
num_ref_idx_l0/1_active_minus1 + 1
Definition: h264.h:225
int ff_h264_decode_extradata(H264Context *h)
Definition: h264.c:544
#define FMO
Definition: h264.h:60
AVBufferRef * mb_type_buf
Definition: h264.h:273
H264Picture * DPB
Definition: h264.h:314
AVBufferPool * mb_type_pool
Definition: h264.h:704
int outputed_poc
Definition: h264.h:569
int chroma_x_shift
Definition: h264.h:326
qpel_mc_func(* qpel_put)[16]
Definition: h264.h:709
Picture parameter set.
Definition: h264.h:219
#define DECLARE_ALIGNED(n, t, v)
Definition: mem.h:58
int16_t(*[2] motion_val)[2]
Definition: h264.h:271
int flags
Definition: h264.h:335
const uint8_t * field_scan8x8_q0
Definition: h264.h:493
int frame_mbs_only_flag
Definition: h264.h:173
int mb_height
Definition: h264.h:502
int16_t * dc_val_base
Definition: h264.h:701
H264Picture * delayed_pic[MAX_DELAYED_PIC_COUNT+2]
Definition: h264.h:566
int is_avc
Used to parse AVC variant of h264.
Definition: h264.h:525
int mmco_index
Definition: h264.h:576
AVBufferPool * ref_index_pool
Definition: h264.h:706
MMCOOpcode
Memory management control operation opcode.
Definition: h264.h:244
uint8_t zigzag_scan8x8_cavlc[64]
Definition: h264.h:485
void(* qpel_mc_func)(uint8_t *dst, const uint8_t *src, ptrdiff_t stride)
Definition: qpeldsp.h:65
uint32_t dequant8_buffer[6][QP_MAX_NUM+1][64]
Definition: h264.h:405
int16_t mv_cache[2][5 *8][2]
Motion vector cache.
Definition: h264.h:378
void ff_h264_decode_init_vlc(void)
Definition: h264_cavlc.c:325
H264Context.
Definition: h264.h:303
int prev_poc_msb
poc_msb of the last reference pic for POC type 0
Definition: h264.h:545
int chroma_qp_diff
Definition: h264.h:238
static av_always_inline void write_back_motion(H264Context *h, int mb_type)
Definition: h264.h:997
uint32_t num_units_in_tick
Definition: h264.h:192
4: bottom field, top field, in that order
Definition: h264.h:146
struct AVFrame f
Definition: h264.h:264
H264Picture * long_ref[32]
Definition: h264.h:565
int picture_structure
Definition: h264.h:419
int slice_type_nos
S free slice type (SI/SP are remapped to I/P)
Definition: h264.h:412
#define AV_COPY32(d, s)
Definition: intreadwrite.h:506
int profile_idc
Definition: h264.h:158
MMCOOpcode opcode
Definition: h264.h:258
AVColorTransferCharacteristic
Color Transfer Characteristic.
Definition: pixfmt.h:322
H.264 DSP functions.
static av_always_inline uint32_t pack16to32(int a, int b)
Definition: h264.h:884
int mb_skip_run
Definition: h264.h:501
void ff_h264_init_cabac_states(H264Context *h)
Definition: h264_cabac.c:1263
void ff_h264_free_context(H264Context *h)
Free any data that may have been allocated in the H264 context like SPS, PPS etc. ...
Definition: h264.c:1818
static av_always_inline int pred_intra_mode(H264Context *h, int n)
Get the predicted intra4x4 prediction mode.
Definition: h264.h:913
uint8_t * chroma_pred_mode_table
Definition: h264.h:476
int ff_h264_decode_ref_pic_list_reordering(H264Context *h)
Definition: h264_refs.c:215
unsigned int crop_top
frame_cropping_rect_top_offset
Definition: h264.h:181
#define USES_LIST(a, list)
Definition: mpegutils.h:95
int resync_mb_y
Definition: h264.h:500
int fixed_frame_rate_flag
Definition: h264.h:194
uint8_t scaling_matrix4[6][16]
Definition: h264.h:235
int ref2frm[MAX_SLICES][2][64]
reference to frame number lists, used in the loop filter, the first 2 are for -2,-1 ...
Definition: h264.h:451
int deblocking_filter_parameters_present
deblocking_filter_parameters_present_flag
Definition: h264.h:231
void h264_init_dequant_tables(H264Context *h)
Definition: h264_slice.c:382
int short_pic_num
pic_num without wrapping (pic_num & max_pic_num)
Definition: h264.h:259
uint32_t(*[6] dequant4_coeff)[16]
Definition: h264.h:406
int ff_h264_set_parameter_from_sps(H264Context *h)
Definition: h264.c:1208
uint8_t
int prev_frame_num_offset
for POC type 2
Definition: h264.h:548
int use_weight
Definition: h264.h:425
int ff_h264_context_init(H264Context *h)
Init context Allocate buffers which are not shared amongst multiple threads.
Definition: h264.c:469
int full_range
Definition: h264.h:186
unsigned int crop_left
frame_cropping_rect_left_offset
Definition: h264.h:179
int offset_for_non_ref_pic
Definition: h264.h:166
int ff_pred_weight_table(H264Context *h)
Definition: h264.c:975
void ff_h264_reset_sei(H264Context *h)
Reset SEI values at the beginning of the frame.
Definition: h264_sei.c:37
int gaps_in_frame_num_allowed_flag
Definition: h264.h:170
int data_partitioning
Definition: h264.h:330
int luma_weight[48][2][2]
Definition: h264.h:430
int field_picture
whether or not picture was encoded in separate fields
Definition: h264.h:293
int bit_depth_chroma
bit_depth_chroma_minus8 + 8
Definition: h264.h:210
AVColorSpace
YUV colorspace type.
Definition: pixfmt.h:344
int ff_h264_alloc_tables(H264Context *h)
Allocate tables.
Definition: h264.c:404
enum AVColorPrimaries color_primaries
Definition: h264.h:188
int poc
frame POC
Definition: h264.h:283
#define b
Definition: input.c:52
int cabac
entropy_coding_mode_flag
Definition: h264.h:221
int mb_xy
Definition: h264.h:505
unsigned int ref_count[2]
num_ref_idx_l0/1_active_minus1 + 1
Definition: h264.h:445
unsigned int crop_right
frame_cropping_rect_right_offset
Definition: h264.h:180
SEI_PicStructType
pic_struct in picture timing SEI message
Definition: h264.h:141
Context for storing H.264 prediction functions.
Definition: h264pred.h:92
void ff_h264_fill_mbaff_ref_list(H264Context *h)
Definition: h264_refs.c:340
quarterpel DSP functions
int frame_recovered
Initial frame has been completely recovered.
Definition: h264.h:689
int height
Definition: h264.h:324
int mb_x
Definition: h264.h:498
int transform_bypass
qpprime_y_zero_transform_bypass_flag
Definition: h264.h:161
H264Picture default_ref_list[2][32]
base reference list for all slices of a coded picture
Definition: h264.h:563
uint8_t chroma_qp_table[2][64]
pre-scaled (with chroma_qp_index_offset) version of qp_table
Definition: h264.h:237
int left_mb_xy[LEFT_MBS]
Definition: h264.h:348
int top_mb_xy
Definition: h264.h:346
qpel_mc_func(* qpel_avg)[16]
Definition: h264.h:710
int redundant_pic_cnt_present
redundant_pic_cnt_present_flag
Definition: h264.h:233
bitstream reader API header.
int chroma_y_shift
Definition: h264.h:326
#define MAX_DELAYED_PIC_COUNT
Definition: h264.h:54
int topright_type
Definition: h264.h:352
AVBufferRef * qscale_table_buf
Definition: h264.h:267
SEI_Type
SEI message types.
Definition: h264.h:129
const uint8_t ff_h264_chroma_qp[3][QP_MAX_NUM+1]
One chroma qp table for each supported bit depth (8, 9, 10).
Definition: h264_ps.c:73
AVColorPrimaries
Chromaticity coordinates of the source primaries.
Definition: pixfmt.h:306
int recovered
picture at IDR or recovery point + recovery count
Definition: h264.h:297
#define AV_COPY64(d, s)
Definition: intreadwrite.h:510
int luma_log2_weight_denom
Definition: h264.h:427
uint8_t direct_cache[5 *8]
Definition: h264.h:481
int sei_vflip
Definition: h264.h:642
int chroma_weight[48][2][2][2]
Definition: h264.h:431
The buffer pool.
int last_pocs[MAX_DELAYED_PIC_COUNT]
Definition: h264.h:567
int width
Definition: h264.h:324
#define MAX_SLICES
The maximum number of slices supported by the decoder.
Definition: h264.h:66
const uint8_t * zigzag_scan8x8_cavlc_q0
Definition: h264.h:491
int frame_num
Definition: h264.h:544
int got_first
this flag is != 0 if we've parsed a frame
Definition: h264.h:527
enum AVColorTransferCharacteristic color_trc
Definition: h264.h:189
int mb_aff
mb_adaptive_frame_field_flag
Definition: h264.h:174
H264PredContext hpc
Definition: h264.h:360
int ff_h264_decode_slice_header(H264Context *h, H264Context *h0)
Decode a slice header.
Definition: h264_slice.c:1185
int16_t mb_luma_dc[3][16 *2]
Definition: h264.h:461
const uint8_t * zigzag_scan_q0
Definition: h264.h:489
int poc_type
pic_order_cnt_type
Definition: h264.h:163
int context_initialized
Definition: h264.h:334
int top_cbp
Definition: h264.h:473
int constrained_intra_pred
constrained_intra_pred_flag
Definition: h264.h:232
ParseContext parse_context
Definition: h264.h:310
int nal_unit_type
Definition: h264.h:518
int use_weight_chroma
Definition: h264.h:426
int num_reorder_frames
Definition: h264.h:197
void ff_h264_direct_ref_list_init(H264Context *const h)
Definition: h264_direct.c:107
static av_always_inline int get_chroma_qp(H264Context *h, int t, int qscale)
Get the chroma qp.
Definition: h264.h:905
const uint8_t * left_block
Definition: h264.h:355
void * hwaccel_picture_private
hardware accelerator private data
Definition: h264.h:277
GetBitContext * inter_gb_ptr
Definition: h264.h:457
int time_offset_length
Definition: h264.h:204
int mb_field_decoding_flag
Definition: h264.h:417
PPS pps
current pps
Definition: h264.h:402
uint8_t(*[2] mvd_table)[2]
Definition: h264.h:478
int prev_interlaced_frame
Complement sei_pic_struct SEI_PIC_STRUCT_TOP_BOTTOM and SEI_PIC_STRUCT_BOTTOM_TOP indicate interlaced...
Definition: h264.h:627
int direct_spatial_mv_pred
Definition: h264.h:434
int ref_poc[2][2][32]
POCs of the frames used as reference (FIXME need per slice)
Definition: h264.h:290
ThreadFrame tf
Definition: h264.h:265
0: frame
Definition: h264.h:142
int weighted_pred
weighted_pred_flag
Definition: h264.h:226
#define IS_SKIP(a)
Definition: mpegutils.h:77
H264QpelContext h264qpel
Definition: h264.h:309
ERContext er
Definition: h264.h:312
#define CABAC(h)
Definition: h264.h:92
int ff_h264_decode_mb_cavlc(H264Context *h)
Decode a macroblock.
Definition: h264_cavlc.c:692
void ff_h264_free_tables(H264Context *h, int free_rbsp)
Definition: h264.c:343
int frame_num
frame_num (raw frame_num from slice header)
Definition: h264.h:284
int residual_color_transform_flag
residual_colour_transform_flag
Definition: h264.h:211
uint8_t * list_counts
Array of list_count per MB specifying the slice type.
Definition: h264.h:447
int delta_pic_order_always_zero_flag
Definition: h264.h:165
int map_col_to_list0[2][16+32]
Definition: h264.h:439
int offset_for_top_to_bottom_field
Definition: h264.h:167
static av_always_inline void write_back_motion_list(H264Context *h, int b_stride, int b_xy, int b8_xy, int mb_type, int list)
Definition: h264.h:962
uint8_t zigzag_scan8x8[64]
Definition: h264.h:484
AVBufferRef * hwaccel_priv_buf
Definition: h264.h:276
int col_parity
Definition: h264.h:435
static const uint8_t scan8[16 *3+3]
Definition: h264.h:868
const uint16_t ff_h264_mb_sizes[4]
Definition: h264.c:52
int chroma_pred_mode
Definition: h264.h:342
int crop
frame_cropping_flag
Definition: h264.h:176
int ff_h264_decode_init(AVCodecContext *avctx)
Definition: h264.c:603
uint8_t * direct_table
Definition: h264.h:480
uint8_t scaling_matrix8[6][64]
Definition: h264.h:236
int nal_length_size
Number of bytes used for nal length (1, 2 or 4)
Definition: h264.h:526
useful rectangle filling function
CABACContext cabac
Cabac.
Definition: h264.h:467
void ff_h264_pred_direct_motion(H264Context *const h, int *mb_type)
Definition: h264_direct.c:692
unsigned int left_samples_available
Definition: h264.h:364
int next_mb_skipped
Definition: h264.h:339
AVBufferRef * motion_val_buf[2]
Definition: h264.h:270
int sei_anticlockwise_rotation
Definition: h264.h:641
Context for storing H.264 DSP functions.
Definition: h264dsp.h:41
int ref_frame_count
num_ref_frames
Definition: h264.h:169
void ff_h264_filter_mb(H264Context *h, int mb_x, int mb_y, uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr, unsigned int linesize, unsigned int uvlinesize)
int frame_num_offset
for POC type 2
Definition: h264.h:547
#define AV_COPY16(d, s)
Definition: intreadwrite.h:502
int initial_cpb_removal_delay_length
initial_cpb_removal_delay_length_minus1 + 1
Definition: h264.h:206
int x264_build
Definition: h264.h:496
uint32_t * mb2br_xy
Definition: h264.h:395
#define MB_TYPE_DIRECT2
Definition: avcodec.h:783
int needs_realloc
picture needs to be reallocated (eg due to a frame size change)
Definition: h264.h:295
ptrdiff_t linesize
Definition: h264.h:325
#define FFMIN(a, b)
Definition: common.h:57
uint16_t * slice_table
slice_table_base + 2*mb_stride + 1
Definition: h264.h:410
uint8_t field_scan8x8_cavlc[64]
Definition: h264.h:488
#define H264_MAX_THREADS
Definition: h264.h:47
int poc_cycle_length
num_ref_frames_in_pic_order_cnt_cycle
Definition: h264.h:168
int colour_description_present_flag
Definition: h264.h:187
int reference
Definition: h264.h:296
AVRational sar
Definition: h264.h:184
int redundant_pic_count
Definition: h264.h:561
int sei_frame_packing_present
frame_packing_arrangment SEI message
Definition: h264.h:632
int long_ref_count
number of actual long term references
Definition: h264.h:579
int cabac_init_idc
Definition: h264.h:582
uint32_t * mb_type
Definition: h264.h:274
int ff_h264_ref_picture(H264Context *h, H264Picture *dst, H264Picture *src)
Definition: h264_picture.c:67
SPS sps
current sps
Definition: h264.h:401
PPS * pps_buffers[MAX_PPS_COUNT]
Definition: h264.h:533
uint8_t mvd_cache[2][5 *8][2]
Definition: h264.h:479
static void fill_rectangle(SDL_Surface *screen, int x, int y, int w, int h, int color)
Definition: avplay.c:396
int sei_hflip
Definition: h264.h:642
#define MAX_SPS_COUNT
Definition: h264.h:49
int ff_h264_decode_picture_parameter_set(H264Context *h, int bit_length)
Decode PPS.
Definition: h264_ps.c:534
int dist_scale_factor[32]
Definition: h264.h:437
H264Picture ref_list[2][48]
0..15: frame refs, 16..47: mbaff field refs.
Definition: h264.h:448
int init_qp
pic_init_qp_minus26 + 26
Definition: h264.h:228
int mmco_reset
Definition: h264.h:577
int direct_8x8_inference_flag
Definition: h264.h:175
int8_t intra4x4_pred_mode_cache[5 *8]
Definition: h264.h:358
uint8_t * bipred_scratchpad
Definition: h264.h:699
int poc_lsb
Definition: h264.h:540
int max_pic_num
max_frame_num or 2 * max_frame_num for field pics.
Definition: h264.h:559
int ff_generate_sliding_window_mmcos(H264Context *h, int first_slice)
Definition: h264_refs.c:538
unsigned int topright_samples_available
Definition: h264.h:363
uint8_t scaling_matrix8[6][64]
Definition: h264.h:200
Definition: h264.h:116
frame packing arrangement
Definition: h264.h:134
const uint8_t * zigzag_scan8x8_q0
Definition: h264.h:490
int curr_pic_num
frame_num for frames or 2 * frame_num + 1 for field pics.
Definition: h264.h:554
int slice_type
Definition: h264.h:411
int left_cbp
Definition: h264.h:474
int top_type
Definition: h264.h:351
static av_always_inline void write_back_non_zero_count(H264Context *h)
Definition: h264.h:939
uint32_t dequant4_buffer[6][QP_MAX_NUM+1][16]
Definition: h264.h:404
ptrdiff_t mb_uvlinesize
Definition: h264.h:399
unsigned int list_count
Definition: h264.h:446
unsigned int sps_id
Definition: h264.h:157
int topright_mb_xy
Definition: h264.h:347
GetBitContext intra_gb
Definition: h264.h:454
int dequant_coeff_pps
reinit tables when pps changes
Definition: h264.h:535
int pic_order_present
pic_order_present_flag
Definition: h264.h:222
struct H264Context * thread_context[H264_MAX_THREADS]
Definition: h264.h:588
SPS * sps_buffers[MAX_SPS_COUNT]
Definition: h264.h:532
int chroma_log2_weight_denom
Definition: h264.h:428
int bit_depth_luma
luma bit depth from sps to detect changes
Definition: h264.h:529
short offset_for_ref_frame[256]
Definition: h264.h:195
int chroma_format_idc
chroma format from sps to detect changes
Definition: h264.h:530
VideoDSPContext vdsp
Definition: h264.h:306
int timing_info_present_flag
Definition: h264.h:191
int ff_h264_execute_ref_pic_marking(H264Context *h, MMCO *mmco, int mmco_count)
Execute the reference picture marking (memory management control operations).
Definition: h264_refs.c:572
int mb_stride
Definition: h264.h:503
int vcl_hrd_parameters_present_flag
Definition: h264.h:202
AVCodecContext * avctx
Definition: h264.h:304
#define MB_TYPE_8x16
Definition: avcodec.h:780
int slice_alpha_c0_offset
Definition: h264.h:511
1: top field
Definition: h264.h:143
void ff_h264_remove_all_refs(H264Context *h)
Definition: h264_refs.c:476
int prev_frame_num
frame_num of the last pic for POC type 1/2
Definition: h264.h:549
Definition: h264.h:114
H264Picture * short_ref[32]
Definition: h264.h:564
int topleft_mb_xy
Definition: h264.h:345
int next_outputed_poc
Definition: h264.h:570
int ff_h264_decode_sei(H264Context *h)
Decode SEI.
Definition: h264_sei.c:219
int poc_msb
Definition: h264.h:541
int field_poc[2]
top/bottom POC
Definition: h264.h:282
int implicit_weight[48][48][2]
Definition: h264.h:432
int recovery_frame
recovery_frame is the frame_num at which the next frame should be fully constructed.
Definition: h264.h:676
int max_contexts
Max number of threads / contexts.
Definition: h264.h:601
main external API structure.
Definition: avcodec.h:1050
int dpb_output_delay_length
dpb_output_delay_length_minus1 + 1
Definition: h264.h:208
Definition: h264.h:245
int vui_parameters_present_flag
Definition: h264.h:183
2: bottom field
Definition: h264.h:144
#define QP_MAX_NUM
Definition: h264.h:105
int resync_mb_x
Definition: h264.h:499
int16_t mb[16 *48 *2]
as a dct coeffecient is int32_t in high depth, we need to reserve twice the space.
Definition: h264.h:460
int frame_packing_arrangement_type
Definition: h264.h:633
int prev_mb_skipped
Definition: h264.h:338
int8_t * qscale_table
Definition: h264.h:268
int constraint_set_flags
constraint_set[0-3]_flag
Definition: h264.h:212
SEI_PicStructType sei_pic_struct
pic_struct in picture timing SEI message
Definition: h264.h:619
int ff_h264_update_thread_context(AVCodecContext *dst, const AVCodecContext *src)
Definition: h264_slice.c:472
int slice_beta_offset
Definition: h264.h:512
const uint8_t * field_scan8x8_cavlc_q0
Definition: h264.h:494
uint32_t(*[6] dequant8_coeff)[64]
Definition: h264.h:407
int qp_thresh
QP threshold to skip loopfilter.
Definition: h264.h:321
rational number numerator/denominator
Definition: rational.h:43
int8_t * ref_index[2]
Definition: h264.h:280
#define MAX_MMCO_COUNT
Definition: h264.h:52
Definition: h264.h:112
int pixel_shift
0 for 8-bit H264, 1 for high-bit-depth H264
Definition: h264.h:318
int mmco_reset
MMCO_RESET set this 1.
Definition: h264.h:285
int ff_h264_decode_ref_pic_marking(H264Context *h, GetBitContext *gb, int first_slice)
Definition: h264_refs.c:736
H264Picture * cur_pic_ptr
Definition: h264.h:315
int16_t mb_padding[256 *2]
as mb is addressed by scantable[i] and scantable is uint8_t we can either check that i is not too lar...
Definition: h264.h:462
AVPictureType
Definition: avutil.h:252
display orientation
Definition: h264.h:135
unsigned int sps_id
Definition: h264.h:220
int log2_max_poc_lsb
log2_max_pic_order_cnt_lsb_minus4
Definition: h264.h:164
6: bottom field, top field, bottom field repeated, in that order
Definition: h264.h:148
int sei_buffering_period_present
Buffering period SEI flag.
Definition: h264.h:695
int block_offset[2 *(16 *3)]
block_offset[ 0..23] for frame macroblocks block_offset[24..47] for field macroblocks ...
Definition: h264.h:392
uint32_t time_scale
Definition: h264.h:193
int transform_8x8_mode
transform_8x8_mode_flag
Definition: h264.h:234
H.264 / AVC / MPEG4 prediction functions.
int pic_struct_present_flag
Definition: h264.h:203
uint8_t zigzag_scan[16]
Definition: h264.h:483
Definition: h264.h:117
void ff_h264_filter_mb_fast(H264Context *h, int mb_x, int mb_y, uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr, unsigned int linesize, unsigned int uvlinesize)
picture timing
Definition: h264.h:131
Definition: vp9.h:56
#define AV_ZERO128(d)
Definition: intreadwrite.h:542
int height
Definition: gxfenc.c:72
int mbaff
1 -> MBAFF frame 0-> not MBAFF
Definition: h264.h:292
A reference to a data buffer.
Definition: buffer.h:81
void ff_h264_flush_change(H264Context *h)
Definition: h264.c:1050
int is_complex
Definition: h264.h:507
AVBufferPool * qscale_table_pool
Definition: h264.h:703
H264Picture * next_output_pic
Definition: h264.h:568
int slice_context_count
Definition: h264.h:603
AVBufferPool * motion_val_pool
Definition: h264.h:705
int mb_height
pic_height_in_map_units_minus1 + 1
Definition: h264.h:172
uint8_t * rbsp_buffer[2]
Definition: h264.h:519
int init_qs
pic_init_qs_minus26 + 26
Definition: h264.h:229
int qscale
Definition: h264.h:328
int pic_id
pic_num (short -> no wrap version of pic_num, pic_num & max_pic_num; long -> long_pic_num) ...
Definition: h264.h:287
int dist_scale_factor_field[2][32]
Definition: h264.h:438
#define tprintf(p,...)
Definition: get_bits.h:626
MECmpContext mecc
Definition: h264.h:305
#define AV_COPY128(d, s)
Definition: intreadwrite.h:514
int nal_hrd_parameters_present_flag
Definition: h264.h:201
const uint8_t * intra_pcm_ptr
Definition: h264.h:459
ptrdiff_t mb_linesize
may be equal to s->linesize or s->linesize * 2, for mbaff
Definition: h264.h:398
int ff_h264_field_end(H264Context *h, int in_setup)
Definition: h264_picture.c:147
uint16_t * slice_table_base
Definition: h264.h:537
int log2_max_frame_num
log2_max_frame_num_minus4 + 4
Definition: h264.h:162
#define MB_TYPE_8x8
Definition: avcodec.h:781
Bi-dir predicted.
Definition: avutil.h:255
int cur_chroma_format_idc
Definition: h264.h:698
const uint8_t * ff_h264_decode_nal(H264Context *h, const uint8_t *src, int *dst_length, int *consumed, int length)
Decode a network abstraction layer unit.
Definition: h264.c:216
int long_arg
index, pic_num, or num long refs depending on opcode
Definition: h264.h:260
int sei_ct_type
Bit set of clock types for fields/frames in picture timing SEI message.
Definition: h264.h:649
int chroma_qp[2]
Definition: h264.h:319
#define MB_TYPE_16x8
Definition: avcodec.h:779
uint16_t sub_mb_type[4]
Definition: h264.h:422
Core video DSP helper functions.
int bit_depth_luma
bit_depth_luma_minus8 + 8
Definition: h264.h:209
static av_always_inline void write_back_intra_pred_mode(H264Context *h)
Definition: h264.h:928
int intra16x16_pred_mode
Definition: h264.h:343
int prev_poc_lsb
poc_lsb of the last reference pic for POC type 0
Definition: h264.h:546
int col_fieldoff
Definition: h264.h:436
#define IS_8X8(a)
Definition: mpegutils.h:85
uint8_t non_zero_count_cache[15 *8]
non zero coeff count cache.
Definition: h264.h:371
uint8_t(*[2] top_borders)[(16 *3)*2]
Definition: h264.h:365
H264Picture cur_pic
Definition: h264.h:316
int sei_display_orientation_present
display orientation SEI message
Definition: h264.h:640
int content_interpretation_type
Definition: h264.h:634
int mb_width
Definition: h264.h:502
enum AVPictureType pict_type
Definition: h264.h:611
int current_slice
current slice number, used to initalize slice_num of each thread/context
Definition: h264.h:593
buffering period (H.264, D.1.1)
Definition: h264.h:130
int mb_width
pic_width_in_mbs_minus1 + 1
Definition: h264.h:171
int slice_group_count
num_slice_groups_minus1 + 1
Definition: h264.h:223
uint32_t * mb2b_xy
Definition: h264.h:394
int cpb_cnt
See H.264 E.1.2.
Definition: h264.h:205
int slice_type_fixed
Definition: h264.h:413
AVBufferRef * ref_index_buf[2]
Definition: h264.h:279
int delta_poc_bottom
Definition: h264.h:542
const uint8_t * field_scan_q0
Definition: h264.h:492
int ff_h264_fill_default_ref_list(H264Context *h)
Fill the default_ref_list.
Definition: h264_refs.c:119
H264DSPContext h264dsp
Definition: h264.h:307
int ff_h264_get_profile(SPS *sps)
compute profile from sps
Definition: h264.c:1188
int ref_count[2][2]
number of entries in ref_poc (FIXME need per slice)
Definition: h264.h:291
uint8_t field_scan8x8[64]
Definition: h264.h:487
Definition: h264.h:110
#define av_always_inline
Definition: attributes.h:40
int chroma_weight_flag[2]
7.4.3.2 chroma_weight_lX_flag
Definition: h264.h:692
int8_t * intra4x4_pred_mode
Definition: h264.h:359
int cpb_removal_delay_length
cpb_removal_delay_length_minus1 + 1
Definition: h264.h:207
8: frame tripling
Definition: h264.h:150
int deblocking_filter
disable_deblocking_filter_idc with 1 <-> 0
Definition: h264.h:510
#define AV_RN64A(p)
Definition: intreadwrite.h:450
int map_col_to_list0_field[2][2][16+32]
Definition: h264.h:440
#define LIST_NOT_USED
Definition: h264.h:380
uint8_t(* non_zero_count)[48]
Definition: h264.h:373
unsigned int crop_bottom
frame_cropping_rect_bottom_offset
Definition: h264.h:182
float min
int ff_h264_check_intra_pred_mode(H264Context *h, int mode, int is_chroma)
Check if the top & left blocks are available if needed & change the dc mode so it only uses the avail...
Definition: h264.c:175
int slice_num
Definition: h264.h:409
int sei_recovery_frame_cnt
recovery_frame_cnt from SEI message
Definition: h264.h:668
int droppable
Definition: h264.h:329
int level_idc
Definition: h264.h:159
int nal_ref_idc
Definition: h264.h:517
uint8_t field_scan[16]
Definition: h264.h:486
int ff_set_ref_count(H264Context *h)
Definition: h264.c:1248
void ff_h264_hl_decode_mb(H264Context *h)
Definition: h264_mb.c:804
void ff_h264_draw_horiz_band(H264Context *h, int y, int height)
Definition: h264.c:80
int b_stride
Definition: h264.h:396
int sei_dpb_output_delay
dpb_output_delay in picture timing SEI message, see H.264 C.2.2
Definition: h264.h:654
unsigned int rbsp_buffer_size[2]
Definition: h264.h:520
recovery point (frame # to decoder sync)
Definition: h264.h:133
Context Adaptive Binary Arithmetic Coder.
int neighbor_transform_size
number of neighbors (top and/or left) that used 8x8 dct
Definition: h264.h:386
int8_t ref_cache[2][5 *8]
Definition: h264.h:379
int mb_mbaff
mb_aff_frame && mb_field_decoding_flag
Definition: h264.h:418
int short_ref_count
number of actual short term references
Definition: h264.h:580
int mb_slice_group_map_type
Definition: h264.h:224
enum AVColorSpace colorspace
Definition: h264.h:190